Duplicate Advisory: Possible remote code execution via a remote procedure call

published 2019-10-03 7 y ago modified 2026-06-17 4 mo ago also GHSA-9ggp-4jpr-7ppj , GHSA-pj4g-4488-wmxm , PYSEC-2019-118 , EUVD-2019-0126

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 13.0%; EPSS 13.0% chance of exploitation in 30 days, percentile 96%
public exploits: 1; Metasploit

In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes to construct a remote procedure call that executes code for an RPyC service with default configuration settings.

Patch / fix

fixed in 1 distros 1

pypi rpyc 4.1.1, 4.1.2

python-rpyc openSUSE Tumbleweed 6.0.2-1.5
python-rpyc openSUSE Tumbleweed 6.0.0-1.2
python-rpyc Package Hub 15 SP1 4.1.5-bp151.2.3.1
python-rpyc-test Package Hub 15 SP1 4.1.5-bp151.2.3.1
python-rpyc openSUSE Leap 15.1 4.1.5-lp151.3.3.1
python-rpyc-test openSUSE Leap 15.1 4.1.5-lp151.3.3.1

opensuse advisories openSUSE-SU-2026:12040-1 openSUSE-SU-2024:14162-1 openSUSE-SU-2020:0763-1 openSUSE-SU-2020:0685-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-16328 updated 2025-11-21 cvss 7.5

python-rpyc: missing protocol security check leads remote procedure call that executes code for a RPyC service

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

2019-10-03 Published
2023-02-19 First public exploit (Metasploit auxiliary/scanner/http/rpyc_rce)

Exploit prediction

13.05% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit auxiliary/scanner/http/rpyc_rce RPyC 4.1.0 through 4.1.1 Remote Command Execution metasploit auxiliary, normal rank, 2023-02-19
rpyc.readthedocs.io https://rpyc.readthedocs.io/en/latest/docs/security.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub	3.1	8.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	rpyc	>=4.1.0, <4.1.1 >=4.1.0, <4.1.2	4.1.1 4.1.2

Classification

Weakness

CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
CWE-285 Improper Authorization

References

rpyc.readthedocs.io /en/latest/docs/security.html
web, exploit, vendor-advisory
lists.opensuse.org /opensuse-security-announce/2020-05/msg00046.html
vendor-advisory, web, broken-link
lists.opensuse.org /opensuse-security-announce/2020-06/msg00004.html
vendor-advisory, web, broken-link
github.com /tomerfiliba/rpyc
web, product, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2019-16328
advisory
github.com /advisories/GHSA-9ggp-4jpr-7ppj
advisory
github.com /advisories/GHSA-pj4g-4488-wmxm
advisory
github.com /pypa/advisory-database/tree/main/vulns/rpyc/PYSEC-2019-118.yaml
web
github.com /tomerfiliba-org/rpyc/security/advisories/GHSA-pj4g-4488-wmxm
web
github.com /tomerfiliba-org/rpyc
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary